John graves



May l, 1923. 1,453,869

t J. GRAVES EJEGTING MECHANISM FOR BATTERY CORE MAKING MACHINES Original Filed July 5, 1.918 n atboumf \f07z7z Graves,

` Patented May 1, 1923.

UNTE' STATES l Laaste? rare-Nr Orefice, il* f JOHN GRAVES, orl MADISON, WISCONSIN, ASSIGNORTOFRENOH BATTERY a CARBON 1 COMPANY, or` MADISON, WISCONSIN, A'OoRroRA'rioN or'v WISCONSIN.

EJEOTING MEOHANISM roR BATTERY-OORn-MAKING MACHINES.

Original application led July 5, 1918, Serial No, 243,503.. kDivided and this application led March 14,k

To all'fwiom t may concern.'

Be it known that I, JOHN GRAVES, a citizen of the United States, residing at Madison, in the county of Dane and State of IVisconsin, have invented a certain new and useful Improvement in Ejecting Mechanism for Battery-Core-Making Machines, of which the following is a specification.

In the manufacture vof what are commonly known in the trade as dry batteries, for use in hand flash lamps and the like, it is common to surround a fixed carbon pencil with a more or less tightly pressed cylinder,J of depolarizing chemicals, commonly called mix. In practice heretofore it has frequently. been common to insert the carbon pencil in the'mold and then tamp the depolarizing material or mix about it, but'more satisfactory results are obtained both in operative manipulation of manufacture and in actual use in a battery, if the cylinder of dev polarizing material is first formed in a mold and then thecarbon pencil is pressed into it.

United States patent application, Serial Number 243,503, filed July 5,1918 of which this application is a division, shows a machinefor inserting a carbon pencil in a cylinder'of mix and shows,` but does not claim, the mechanism of this application forejecting the finished product from the mold.

The object of this invention is to provide a comparatively cheap, easily constructable and efiiciently operating mechanism for re moving the finished mix and carbon pencil from the machine. The invention consists in mechanism for attaining the foregoing objects and in many features and details of construction which will be hereafter more fully set forth in the specification and claims.

View of mechanism illustra-ting this invention in its preferred form.

Figure 3 is a detail view of the ejector plunger showingv means for adjusting it for substituting a new tool.

For convenience of ready comparison with the original application from which this application is divided, the'same reference numerals used in said .original application are retained in this one to designate the various parts.

This part of the mechanism is contained within the general portion 62 of the frame Serial No. 452,072.

of they machine, of said prior application. The principal object of the invention is to properly remove the finished product consisting of the cylinder of mix 386 carrying the carbon pencil 384 from the mold 52 sustained by table member 5() fully described in the Original application. Broadly'speak'- ing thev ejector mechanism consists simply of a reciprocating .rod 458, carrying at its lower end a detachable tool'460 adjustablel as to Size by substitution as in the case 'of` tool 454, and adjustable as to lengththrough the agency of'screw threads k462; this in combination with means operated by shaft 370 for at the proper' time driving this plunger 458 downward into the registering mold to drive out thereform the finished product 384-386 into a suitablel receptacle, or chute 466. The problem., however, pre-.'A

sented inrworking with the particular prod-l uct in hand requires that the rod 458 with attached tool 460 be given a slightr rotary motion as it descendsv through the mold and that, as the product isV releasedfrom the mold, it be given a sharp stroke or kick to effectively eject it without injuring the conformation of the'compressed cylinder of depolarizing material, which is at the time moist and more or less soft. This result is laccomplished by mechanism illustratedinv Figures l and2. A crosshead 468 is provided, guided for vertical movement in any suitable manner, as forinstance, by'a pin'y 470, vertically slidable in a'suitable slot 472 formed in frame casting 62. This crosshead 468 is connectedy for. reciprocation/by shaft 370 by any suitable means such, for instance, as a wheel 474, mounted on the shaft, land a connecting `rod`476, attached j y I at one end'to thewhe'el and at the other end Figure l is a front and Figure 2 a side.v

to the crosshead. Insteadfo'f making rod 458 integral with kthis crosshead as would do, if rotation of the rod were not required,

the rod 458 is made rotatable in the crosshead, being held against llongitudinal movement with reference to the crosshead by a grooved wheel 478, rigidly secured on ejector rod 458 by any suitable means not shown in detail. Pivotally mounted on opposite `sides of `crosshead 468 and in proper rela- 'LII ber 4:84, attached at one end to the upper portion of the frame by any suitable means, such as screw Li556, and at its other end to the lower portion of the frame by` screw 488. The result of this construction is that, assuming the parts are in the position shown in Figure l and the wheel all is rotated, the crosshead i638 is moved downward. T his causes pulleys 478, 1.80 and 82 to travel alono` spring 484, but under sufficient frictional engagement so that the pulleys and particularly 478 are rotated, thus slowly rotating` member 458-460. As the crosshead descends the frictional engagement of these pulleys with the spring` 484i tends to stretch that portion ot the spring which is above the pulleys, between them and fastening ebb, with the result that when tool 460 has moved through mold 52 sufficiently to eject the product 2584-4586, this spring is under a severe tension. As the product begins to loosen and leave the mold, this tension of the spring exerts itself to produce a quiclr pull over the pulleys and thus give tool 460 a quick rotary motion as the finished product leaves the mold, which action in actual practice proouces the desired result of a properly finished product member.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent, is:

l. In a device of the class described, the combination of a fixed support, a plunger rotatable and reciprocatable with reference thereto, means for rotating said plunger, means for reciprocating said plunger, a spring member in connection with the rotating device adapted to apply spring tension to said plunger as it rotates.

2. In a device of the class described, the combination of a suitable support, a rotatable and reciprocatable member mounted therein, means for reciprocating said member, a retractile spring having its ends fixed and its middle' portion passing around the outside of said reciprocating member in such' a way that the reciprocation of said membe rotates said member and stretches one end of said spring for the purposes set forth.

3. ln a device of the class described, the combination of a suitable support, a plunger adapted for reciprocation and rotation within the support, a crosshead guided by the support within which said plunger rotates but does not slide, a pulley carried by the crosshead rigid 'with the plunger, a belt of spring material connected to the crosshead and passing around said pulley on the plm/iger, means for reciprocating the crosshead whereby reciprocating the crosshead causes the plunger to lrecijirocate and the pulley to pass along the spring, thus rotating the plunger and putting it under tension, for the purposes set forth.

ln a device of the class described, the combination of a suitable support, having parallel arms projecting therefrom, a retractile spring member having its opposite ends connected to said arms, a crosshead mounted for movement between said arms, a main pulley having its axles parallel to the general length of the spring member, two

guiding pulleys at right angles thereto, all.

mounted on the crosshead in such a way that the spring member passes over said main pulley, a plunger member slidable and rotatable with reference to the support, mounted rotatably in the crosshead to be driven bya the main pulley and means for reciprocating the crosshead between said projecting arms of the frame for the purposes set forth.

5. In a device of the class described, the combination of a supporting frame, a rotatable and reciprocatable ejecting member, a crosshead reciprocatable with reference to the frame, a pulley in the crosshead to which the ejector member is rigidly attached but with which it rotates, a retractile springl member connected at its endsto fixed parts in the frame and passing over said pulley for tliepurpose of giving the ejector member a spring tension rotary movement, a shaft at right angles to the ejector member, a connecting rod attached to said crosshead and operatably connected with the shaft, whereby rotating of the shaft reciprocate's the ejector member, and rotates it under in-.

creasing spring tension, as and for the purposes set forth.

ln witness whereof, lhave hereunto subscribed my name in the presence of two witnesses.

JOHN GRAVES. Witnessesz W. C. Bosran, BEN W. PARK. 

